I would choose Glock hands down.
*Almost Fully Supported Chamber that allows a very wide range of ammo to be chambered reliably.
*Ability to shoot most any jacketed round reliably.
*Grip Angle (for me the Glock points naturally straighter unlike a 1911)
*Only has a Safe Action Trigger Safety
No grip safety to give you a false sense of security.
I don't see how a grip safety makes a pistol more safe. Any way I can think of to accidentally fire the pistol would have my hand on the Grip safety anyway.
*Loaded chamber and no redundant cocking indicator
Glock has a loaded chamber indicator and the cocking indicator on the XD only tells you what you already know: The slide was cycled and the trigger hasn't been pulled yet.
*Sights made of cheap plastic that doesn't add much to the manufacturing cost of the gun.
I like XS Big Dots and would take off the factory site even if it wasn't plastic.
*Trigger is made of light weight plastic not heavy metal.
*Guide Rod is made of light weight and flexible plastic not heavy rigid metal.
*Left side mag release because face it, we live in a right handed world.
*Glock has a great warranty and trusts that the customer can order replacement parts when needed. Try to order a part from Springfield. Springfield has great customer service because you will need them every time you want to replace a part. Glock parts are everywhere. I think the kid down the street gives them out for free if you buy her Koolaid. I should know, I drink A LOT of koolaid.